Re: [RESEND PATCH v3 4/7] PCI: dwc: all: Modify dbi accessors to take dbi_base as argument

Niklas Cassel
2017-03-10T12:23:42Z

On 03/10/2017 12:36 PM, Kishon Vijay Abraham I wrote:
> Hi,
>
> On Thursday 09 March 2017 08:35 PM, Niklas Cassel wrote:
>>
>> On 03/09/2017 03:48 PM, Niklas Cassel wrote:
>>> On 03/09/2017 07:39 AM, Kishon Vijay Abraham I wrote:
>>>> dwc has 2 dbi address space labeled dbics and dbics2. The existing
>>>> helper to access dbi address space can access only dbics. However
>>>> dbics2 has to be accessed for programming the BAR registers in the
>>>> case of EP mode. This is in preparation for adding EP mode support
>>>> to dwc driver.
>>> Hello Kishon
>>>
>>> I don't really like the idea of adding an extra argument to every existing read/write.
>>> Will not a read/write using dbi2 be quite uncommon compared to a read/write
>>> using dbi?
>>>
>>> How about something like this:
>>>
>>> void __dw_pcie_writel(struct dw_pcie *pci, void __iomem *base, u32 reg, u32 val)
>>> {
>>> if (pci->ops->writel_dbi)
>>> pci->ops->writel_dbi(pci, base, reg, val);x‘W¡R\x7f